Stop device for upper stops and a pull of a nylon zipper

ABSTRACT

A stop device for upper stops and a pull of a Nylon zipper has an upper stop formed by a left stop and a right stop; a pull being installed on one end of a zipper strip. The upper end surfaces and the bottom of the left stop and right stop are formed with protruded stop blocks, and the pull has a left and a right teeth channels tops or bottoms of which are formed with stop grooves. When the left stop and right stop enter into the two upper teeth channels of the pull, the left stop and right stop enter into the stop grooves. Since the stop blocks are resisted by the stop grooves, the left stop and right stop are buckled in the pull. Moreover, the left stop and right stop have the function of preventing the pull from separating from the zipper strips.

FIELD OF THE INVENTION

[0001] The present invention relates to zipper elements, andparticularly to stop device for upper stops and a pull of a Nylonzipper.

BACKGROUND OF THE INVENTION

[0002] A zipper with an upper stop is disclosed. In that, the upper stopis formed by a left stop and a right stop which are formed at an upperend and interior of the zipper teeth. The stops are rectangular and hasa U-like cross sections. The left stop and right stop can enter into thetwo upper teeth channels of a pull of the zipper and are engaged withthe engaged zipper teeth to be arranged as a Y shape. The defect of thisprior art is that the pull is easily separated from the left stop andright stop automatically.

[0003] Thereby, the inventor of the present invention discloses a zipperin which stop blocks are protruded from tops or bottoms of the upperstops for resisting the pull so that the pull can not separate from theleft stop and right stop. But in this prior art, the stops are placedout of the pull (i. e., can not enter into the upper teeth channels ofthe pull) and the stops are too sharp so that it is possible to hurtpeople. Moreover, the stop is used in steel zippers instead of Nylonzippers.

[0004] No positioning pin is used in mold-injecting the bottoms of thestops, the thickness of the stops are not uniform, because nopositioning pin is used to support the zipper strips, the melt plasticcan not flow into the bottom of the stops. Thereby, the effect of theproduct is bad.

SUMMARY OF THE INVENTION

[0005] Accordingly, the primary object of the present invention is toprovide a stop device for upper stops and a pull of a Nylon zipper hasan upper stop formed by a left stop and a right stop; a pull beinginstalled on one end of a zipper strip. The upper end surfaces and thebottom of the left stop and right stop are formed with protruded stopblocks, and the pull as a left and a right teeth channels tops orbottoms of which are formed with stop grooves. When the left stop andright stop enter into the two upper teeth channels of the pull, the leftstop and right stop enter into the stop grooves. Since the stop blocksare resisted by the stop grooves, the left stop and right stop arebuckled in the pull. Moreover, the left stop and right stop have thefunction of preventing the pull from separating from the zipper strips.

[0006] The various objects and advantages of the present invention willbe more readily understood from the following detailed description whenread in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007]FIG. 1 is an exploded schematic view showing the upper stops andpull of the zipper according to the present invention.

[0008]FIG. 2 is a cross sectional view showing the assembled upper stopand pull in FIG. 1.

[0009]FIG. 3 is an exploded schematic view showing the upper stop andthe pull in another embodiment of the present invention.

[0010]FIG. 4 is a perspective view showing that the upper stop is usedwith pull of FIG. 3.

[0011]FIG. 5 is an elevational view showing that the upper stop iscoupled to the pull of FIG. 3.

[0012]FIG. 6 is an exploded schematic view showing the zipper and thepull in another embodiment of the present invention.

[0013]FIG. 7 is an exploded perspective view showing the upper stop andthe pull in a further embodiment of the present invention.

[0014]FIGS. 8A to 8C is a schematic view showing the embodiment of theupper stop of the zipper of the invention.

[0015]FIG. 9 is a bottom view about the upper stop and lower stop of thepresent invention.

[0016]FIG. 10 is a cross sectional view showing that the upper stop,lower stop of the zipper are combined.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Referring to FIG. 1, an exploded perspective view of the upperstop and pull of the present invention is illustrated. FIG. 2 shows theassembled view of the upper stop and the pull. It is illustrated thatthe upper stop is formed by a left stop 11 and a right stop 12. Each ofthe left stop 11 and right stop 12 is formed by a long stop and a shortstop and is positioned at upper ends of the two banks of the zipperteeth 18 and an inner lateral side of the two zipper strips 10. Each ofthe left stop 11 and right stop 12 has a slit 13 and a through hole 15for receiving seamed lines 14 (referring to FIGS. 2 and 4). The slit 13and through hole 15 are formed after the upper stop is formed byinjection.

[0018] The feature of the present invention is that the upper endsurfaces and the bottom of the left stop 11 and right stop 12 are formedwith protruded stop blocks 16. Respectively, the pull 20 has a left anda right teeth channels 21 the top or bottom of which are installed withstop grooves 22. The stop blocks 16 and the stop grooves 22 areengageable. An opening of each stop grooves 22 extends into an interiorof the teeth channels.

[0019] Another feature of the present invention is that the upper edgesof lower elements of the left stop 11 and right stop 12 are chamfered tohave tilt guide surfaces 51, preferable, they are chamfered with a 45degree angles. When the left stop 11 and right stop 12 are guided intothe pull 20, they will not be buckled with the middle isolating blocks,teeth channels 21 and stop grooves 22, etc. Thereby, the left stop 11and right stop 12 are easily guided into the pull 20. Since the tiltguide surface is not found in the prior art upper stop (including steelzippers or nylon zippers). Thereby, when the two stops are guided intothe pull 20 obliquely, they are buckled and resisted by the pull. Thiswill make the users feel uneasy. If the zipper is used for a longertime, it easily damages.

[0020] Referring to FIG. 3, the left stop 11 and right stop 12 areformed with buckles 17. The buckles 17 and the stop blocks 16 have dualeffects of stopping. The buckles 17 resist against the two lateral wallsof the upper teeth channels 21 (referring to FIG. 5 and the stop blocks16 resist against the stop grooves 22).

[0021] Referring to FIGS. 4 and 5, the buckle 17 has been used in theprior art and thus the details thereof will not be further describedherein. After the left stop 11 and right stop 12 enter into the twoupper teeth channels 21 of the pull 20, the stop blocks 16 enter intothe stop grooves 22. Since the stop blocks 16 are resisted by the stopgrooves 22, the left stop 11 and right stop 12 are positioned andbuckled to the upper teeth channels 21 and thus can not further enterinto the pull 20. Moreover, the pull 20 resists by the stop blocks 16 ofthe left stop 11 and right stop 12 and can not separate from the upperstop.

[0022] Referring to FIGS. 6 and 7, two further embodiments of thepresent invention are illustrated. In FIG. 6, other than the buckles 17,the tops of the left stop 11 and right stop 12 have stop blocks 16 whichhave rectangular shapes. The tops of the upper teeth channels 21 havestop grooves 22. In FIG. 7, the left stop 11 and right stop 12 havestopping elements and bottoms thereof have stop blocks 16. The bottomsof the upper teeth channels 21 have stop grooves 22 for matching thestop blocks 16.

[0023] In above example, the sizes of the stop blocks 16 and stopgrooves 22 are approximately identical. But two features must be takencare in design. With reference to FIGS. 8A to 8C, an inner lateral sides16 b of stop blocks 16 are straight or tilt. If they are straight, seeFIG. 8A, a gap 31 is formed with the inner lateral side of the stop. Ifit is tilt, see FIG. 8C, the stop blocks 16 have an angle θ° 32 with theinner side of the stops. The gap 31 and tilt angle 32 casue the upperstop to displace into the stop grooves 22 when the upper stop is guidedinto the pull 20. If no gap or tilt angle is formed, the stop blocks 16easily touch the front edge of the pull 20 and the middle isolatingblock. Moreover, the lengths 33 of the stop blocks 16 and buckles 17 arepreferably identical. That is, the lower edge 16 a of the stop block 16a is flushed with the lower edge 17 a of the buckle 17. Thereby, theycan be resisted by the outer wall and stop groove of the pull 20.Thereby, the upper stop suffers from a uniform force. In FIG. 8C, thestop blocks 16 are flushed with the buckles 17 so that the stop blocks16 have larger area.

[0024] Referring to FIG. 9, the bottom views of the upper and lowerstops are illustrated. It is illustrated that the left stop 11 and rightstop 12 of the upper stops have a U-like shape. The lower stop 40 has anH-like shape. The left and right sides of the lower stop 40 have slits42 for clamping the zipper strips. The bottoms of the left stop 11,right stop 12 and lower stop 40 have at least one positioning holes 19,41. When the left stop 11, right stop 12 and lower stop 40 are formed bymold-injection, the zipper strips are installed with positioning pins(not shown) for forming the positioning holes. The positioning holes areused to support the zipper strips 10. Thereby, the plastic material canflow into the bottoms of the zipper strip so as to form the bottoms ofthe stops. Otherwise, the bottom with a width of 0.5 mm will havenon-uniform thickness since the width of the bottom is approximately 0.5mm. The positioning pins are not used in the prior art molding injectiontechnology. Thereby, the bottoms of the upper stop and lower upper stopare not uniform so that they easily crack.

[0025] Referring to FIG. 10, the cross sectional views showing that theleft stop 11, right stop 12 and lower stop 40 are combined with thezipper strip 10. The positioning holes 19, 41 are formed from thebottoms to the zipper strips. After the positioning holes are formed,the strain can be removed when the thermal setting plastics is formed.Thereby, the strains due to the material and temperature differences ofthe zipper strip are released and the plastic stops can be released. Thedesign of the positioning holes is not used in the prior art.

[0026] The present invention is thus described, it will be obvious thatthe same may be varied in many ways. Such variations are not to beregarded as a departure from the spirit and scope of the presentinvention, and all such modifications as would be obvious to one skilledin the art are intended to be included within the scope of the followingclaims.

What is claimed is:
 1. A stop device for upper stops and a pull of aNylon zipper; the upper stop being formed by a left stop and a rightstop; a pull being installed on one end of a zipper strip; characterizedin that: upper end surfaces and the bottom of the left stop and rightstop being formed with protruded stop blocks, and the pull has a leftand a right teeth channels tops or bottoms of which are formed with stopgrooves; the stop blocks and the stop grooves are engageable; whereinwhen the left stop and right stop enter into the two upper teethchannels of the pull, the left stop and right stop enter into the stopgrooves; since the stop blocks are resisted by the stop grooves, theleft stop and right stop are buckled in the pull; moreover, the leftstop and right stop have the function of preventing the pull fromseparating from the zipper strips.
 2. The support seat of an manual oilcylinder as claimed in claim 1, wherein an outer lateral sides of theleft stop and right stop are formed with respective buckles forresisting against the pull.
 3. The stop device for upper stops and apull of a Nylon zipper as claimed in claim 1, wherein one side of eachstop block is straight and reduced from a corresponding side of thecorresponding one of the left stop and right stop.
 4. The stop devicefor upper stops and a pull of a Nylon zipper as claimed in claim 1,wherein one side of each stop block is tilt and reduced from acorresponding side of the corresponding one of the left stop and rightstop.
 5. The stop device for upper stops and a pull of a Nylon zipper asclaimed in claim 1, wherein a length of each stop block is equal to alength of each buckle.
 6. A stop of a zipper; the zipper having twobanks of zipper teeth, upper ends of the zipper teeth being formed witha left stop and a right stop, respectively; characterized in that: oneupper corners of the left stop and right stop are chamfered; whereinwhen the two stops are guided into upper teeth channels of the zipper,the chamfered portion has the function of preventing from buckling witha middle isolating block, upper teeth channels and stop grooves of thezipper, thereby, the left stop and right stop can move into the pullsuccessfully.
 7. The stop of a zipper as claimed in claim 6, wherein thechamfered portion is inclined with an angle of 45 degrees from adjacentsurfaces of the corresponding one of the left stop and right stop. 8.The stop device for stops and pull of a zipper, upper ends of two banksof zipper teeth of the zipper being formed with a left stop and a rightstop, respectively; and a lower stop being formed at one lower end ofone of the two banks of the zipper teeth; one zipper strip having a pullcapable of being engaged to the zipper teeth; characterized in that: abottom of each of the left stop, right stop and lower stop has at leastone positioning holes which is formed from the bottom to the placescontacting the zipper strips so as to release the stain in manufacturingthe stops due to the material and temperature difference.